2016 ... Research Performed by: Center for Transportation Research; Research Supervisor: Michael D. Engelhardt; Researchers: Kerry Kreitman [and five others] · "A number of older bridges in Texas were constructed with floor systems consisting of a non-composite concrete slab over steel girders. Many of these

2016 ... Kerry Kreitman [and six others] · This study investigated the use of post-installed shear connectors for strengthening existing non-composite continuous steel girder bridges. The existing bridges considered in this study have strength deficiencies in both the positive and the negative moment regions. The type of post-installed shear

2013 ... Research Performed by: Center for Transportation Research; Research Supervisor: Richard E. Klingner; Researchers: Oguzhan Bayrak [and eight others] · "Bridge decks composed of precast, pre-stressed panels (PCPs) overlain by cast-in-place (CIP) are popular in many states of the United States, including Texas...

2010 ... Richard E. Klingner, Oguzhan Bayrak, James O. Jirsa and Shih-ho Chao · TxDOT Project 0-6348 “Controlling Cracking in Prestressed Concrete Panels and Optimizing Bridge Deck Reinforcing Steel” started on September 1, 2008 and is scheduled to end on August 31, 2012. The project is proceeding on schedule. This report

2010 ... Seongyeong Yang [and four others] · Economical constraints on the design of bridges usually necessitate the use of as few girders as possible across the bridge width. The girders are typically uniformly spaced transversely with the deck extending past the fascia girders, thereby resulting in an overhang. While designers

2009 ... Todd Helwig [and four others] · Economical constraints on the design of bridges usually necessitate the use of as few girders as possible across the bridge width. The girders are typically uniformly spaced transversely with the deck extending past the fascia girders, thereby resulting in an overhang. While designers commonly

2009 ... Gunup Kwon, Michael D. Engelhardt, Richard E. Klingner · This project was an implementation of research conducted under TxDOT Research Project 0-4124 on the use of post-installed shear connectors to develop composite action in existing non-composite steel bridge girder systems. In this implementation study, an existing

2009 ... Research Performed by: Center for Transportation Research (CTR); Research Supervisor: Michael D. Engelhardt; Researchers: Richard E. Klingner, Gunup Kwon · This project was an implementation of research conducted previously under TxDOT research project 0-4124. Project 0-4124 developed a technique to increase the

2007 ... Gunup Kwon [and six others] · This study investigated methods to strengthen existing non-composite steel bridge girders by the development of composite action between the steel girder and concrete slab. More specifically, the objective of this study was to identify structurally efficient and practical ways to post-install shear

2007 ... G. Mitchell [and six others] · Retrofit barriers can be used to replace highway barriers damaged by vehicular collisions. The purpose of TxDOT Research Project 0-4823 is to develop retrofit designs of current TxDOT highway barriers using mechanical anchors. The retrofit designs should meet the TxDOT performance criteria for

2007 ... Richard E. Klingner and Eric B. Williamson · The researchers found that the proposed designs for the retrofit T203 and T501 barriers met the TxDOT prescribed performance standards and can safely be used to replace severely damaged barriers. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

2007 ... by Sungjin Bae [and three others] · The primary objective of this research is to evaluate the effect of Alkali-Silica Reaction (ASR) and Delayed Ettringite Formation (DEF) on the structural performance of High Mast Illumination Pole (HMIP) foundations and if needed, to recommend a possible retrofitting method to strengthen

2006 ... Christin J. Coselli [and six others] · The primary objective of this research study was to evaluate the behavior and capacity of the IBTS and alternate 8 in. UTSE (Uniform Thickness Slab End) details at expansion joints, especially on skewed ends of bridge slabs. The two full-scale CIP (cast-in-place) specimens, 0o and 45o

2005 ... C.J. Coselli [and six others] · The Texas Department of Transportation (TxDOT) currently uses, for most of its bridges, the ?IBTS? standard detail for bridge slab ends at expansion joints (Figure 1). That detail has enabled TxDOT to eliminate the use of diaphragms at slab ends by increasing the thickness at slab ends. Slab ends are

2005 ... by Amy E. Eskridge [and three others] · This report is a synthesis of the technical results of Texas Department of Transportation Study 4069 ("Mitigation Techniques for In-Service Structures with Premature Concrete Deterioration"). The Texas Department of Transportation is interested in developing techniques for

2005 ... by Jeremy Klahorst, Robert E. Klingner, and Michael E. Kreger · This report describes part of the work associated with Texas Department of Transportation Study 4069 ("Mitigation Techniques for In-Service Structures with Premature Concrete Deterioration"). The Texas Department of Transportation is interested in developing

2004 ... by Amy E. Eskridge [and three others] · This report describes part of the work associated with Texas Department of Transportation Project 0-4069 (?Mitigation Techniques for In-Service Structures with Premature Concrete Deterioration?). The Texas Department of Transportation is interested in developing techniques for

2003 ... M.K. Thompson [and four others] · The behavior of headed reinforcement in concrete was studied using full-scale tests of lap splices. The mechanics of the anchorage behavior were observed and recorded to evaluate the manner in which the capacity of a headed bar is developed. The measured data were compared to the results

2003 ... M.K. Thompson [and four others] · The behavior of headed reinforcement in concrete was studied using full-scale tests of CCT [compression-compression-tension] nodes. The mechanics of the anchorage behavior were observed and recorded to evaluate the manner in which the capacity of a headed bar is developed. The measure

2002 ... L. Memberg, T. Fowler and R. Klingner · The primary objective of this report is to determine the effects of premature concrete deterioration on the bond between prestressing strands and concrete, using damage indices and strand-pullout tests. Sixty-four strand-pullout tests were performed on sixty strands from four laboratory

2002 ... by M.K. Thompson, J.O. Jirsa, J.E. Breen, and R.E. Klingner · The findings of a literature review of topics related to the anchorage of headed reinforcement are presented. The topics are grouped in three broad categories: conventional anchorage of reinforcement, anchorage of headed reinforcement, and a review of strut-and-tie

2002 ... by B.V. Tinkey, T.J. Fowler, and R.E. Klingner · Four different nondestructive tests were evaluated for detecting and quantifying the amount of distributed damage in prestressed concrete bridge girders. This was in response to a number of bridges throughout Texas exhibiting premature concrete deterioration due to a

2001 ... by J.M. Roche, R.E. Klingner and T.J. Fowler · Fatigue tests were conducted on two full-scale concrete box girders with premature concrete deterioration due to a combination of delayed ettringite formation and alkali-silica reaction. The specimens were loaded so that their response would be dominated by shear. Test results were

2001 ... A. Boenig [and three others] · The focus of this report is the use of observations from in-service structures and laboratory specimens with premature concrete deterioration, along with core tests and large-scale tests of laboratory specimens, to predict the capacity of a large element with premature deterioration. The

1996 ... Ronald A. Peron, Richard E. Klingner · The current process used in Texas to design sound walls was documented by conducting a series of telephone interviews with TxDOT district engineers. The interviews focused on three major topics: the process used to select the sound wall type and material; the structural design procedure;

1996 ... Richard E. Klingner [and four others] · Studies have shown that motor vehicle noise is a significant national problem in many communities. Construction of traffic noise barriers (sound walls) has been the most open used mechanism to mitigate vehicle noise for residents living next to high density roadways or proposed high

1995 ... by John C. Graddy, Ned H. Burns, and Richard E. Klingner · An experimental investigation was conducted into the punching shear fatigue behavior of bridge decks, including the effects of arching action. Static and pulsating fatigue tests were performed on both cast-in-place (CIP) and precast prestressed panel (PCP) test specimens. S-N

1994 ... by J.H. Whitt [and three others] · The punching shear behavior of concrete bridge decks under static, pulsating fatigue, and rolling fatigue loads was studied using both analytical and experimental models. The study of the analytical models also played a large role in the design in the design of the experimental specimens, test setup,

1994 ... B.A. English, Richard E. Klingner and Joseph A. Yura · This report deals with Phase One of TxDoT 1304 (Behaviour of Elastomeric Bearings). The overall objectives of that project are (1) to recommend procedures for designing elastomeric bearings used by TxDoT and (2) to recommend practical guidelines and procedures for

1991 ... by C.C. Higgins and R.E. Klingner · This report concerns the results of a study to investigate the tensile behavior of single anchors subjected to environmental exposure, and to compare the behavior of otherwise identical exposed and unexposed anchors. Cast-in-place and retrofit anchors (adhesive, expansion, and undercut)

1989 ... by R.A. Cook, G.T. Doerr and R.E. Klingner · This report synthesizes the results of Reports 1126-1,1126-2, and 1126-3 in the form of a strength-based design guide for steel-to-concrete connections involving short anchor bolts. Both single- and multiple-anchor behavior are addressed. This Design Guide identifies the basic elements of

1989 ... R.A. Cook and Richard E. Klingner · The connection of steel members to concrete is a common structural feature, with applications in both highway and building construction. A typical steel-to-concrete connection includes the following: a steel attachment consisting of a baseplate welded to the attached member; the anchors that

1989 ... by D.M. Collins, R.E. Klingner and D. Polyzois · The purpose of this study was to investigate the design and behavior of single cast in place and retrofit concrete anchors under static, fatigue, and impact tensile loads. The following types of anchors were tested: (1) Cast-in-place anchor bolts and embeds; and (2) Retrofit anchors-(a)

1989 ... by G.T. Doerr and R.E. Klingner · The purpose of this study was to investigate the behavior of retrofit adhesive anchors in concrete, and to develop a rational design procedure for these anchors. The study involved 105 tensile tests on the following types of 5/8-inch adhesive anchors: fully bonded single anchors; partially bonded

1988 ... K.H. Kim, J.M. Dominguez and Richard E. Klingner · An experimental and analytical investigation was conducted regarding the behavior of reinforced concrete skew bridge decks with Ontario-type reinforcement. A series of parametric studies was also conducted to investigate the effect on bridge performance of some design

1986 ... C.K. Tsui, Ned H. Burns and Richard E. Klingner · For the experimental phase of this project, the test specimen was full-size composite bridge, half of which had a cast-in-place deck, and the other half, cast-in-place topping over precast, prestressed panels. Both decks had Ontario-type reinforcement. The test specimen was

1985 ... A. Zilveti [and four others] · Superplasticizers, or high-range water-reducing admixtures, are currently being used mostly in precast plants, and also in production of high strength concrete. The use of superplasticizer in the field as a workability agent offers savings in placing and finishing costs. However, due to the associated slump

1985 ... by M.A. Steves, R. E. Klingner and K.S. Armstrong · The purpose of this study was to investigate the behavior of proposed anchorage designs for two Texas SDHPT T5 concrete traffic barriers, subjected to static and dynamic loads. It was believed that the current design, which specifies the use of 1in.-diameter A193, Grade B7

1985 ... K.S. Armstrong, Richard E. Klingner and Mark Steves · A series of static and impact tests were carried out on a steel barrier post (T101 type) anchored to a 10-in. reinforced concrete deck. Slab reinforcement was modified in an attempt to produce a test specimen which would fail by yielding of the tension anchors. Analytical

1982 ... L.A. Bieschke and R.E. Klingner · One of the newer types of composite bridge construction includes the use of precast prestressed concrete panels which span between longitudinal girders and act as formwork and base for the cast-in-place deck. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

1982 ... by L.A. Bieschke and R. E. Klingner · A series of static and dynamic loading tests was conducted on a full-scale bridge specimen constructed using prestressed precast panels placed on top of prestressed precast girders and covered with a cast-in-place bridge deck. The north half had panels with transverse prestressing strands

1979 ... Bruce Creamer, Karl H. Frank and Richard Klinger · This is the final report of an experimental and analytical study to determine the fatigue loading on cantilever highway signs from gusts produced by trucks passing under the sign. Thee sign structures were instrumented in the field to determine their response from truck gusts.